Steam-heating furnace and boiler.



No. 722,492. PATENTED MAR. 10,1203. G. A.V ooPP.

STEAM HEATING PURNACB AND BOILER. APPLIOATION FILED AUG. 2s, 1902. No MODEL. a SHEETS-SHEET 1.

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No. 722,493. PA'I'EN'IEDl MAR. l0, 1903.

G. A. COPP.

STEAM HEATING PURNAGIEI AND BOILER.,

APPLICATION FILED AUG. 2a. 1902.

No MODEL. a SHEETS-SHEET L.v

3 SHEETS-SHEET 3.

PATBNTED MAR. l0, 1903.

G. A.. COPP. STEAM HBATING'PURNAUE AND Boum.

APPLOATION FILED AGr.l 23, 1902.

N0 MODEL.

UNITED STATES- PATENT FFICE.

GIDEON A. COPP, OF CHICAGO, ILLINOIS.

sTAM-HEATiNG FURNACE AND'BOILER.

SPECIFICATION forming part of Letters Patent' N o. 722,493, dated March 10, 1903. Application filed .August 23,V 1902. A Serial No. 120,764.. (No model.)

To a/ZL whom t may concern:

Be it known that I, GIDEON A. COPP, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Steam-Heating Furnaces and Boilers, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

The purpose of this invention isto provide an improvement in furnaces and boilers particularly designed for house-heating, with a view to adapting -them more perfectly to varieties of fuel requiring different degrees of draft and also for the purpose of making it possible to clean the fines or give otherinterior attention to the boiler Without Withdrawing the fire and in other respects to make such heaters adaptable to varying circumstances and conditions With `respect to the draft, convenience of firing, dsc., according to the particular situations in Whichthey are located and the character and extent of the draft which may be found obtainable through the chimneys to which they may be necessarily connected. 4

It consists in the features of construction which are set out in the claims.

In the drawings, Figure 1 is a longitudinalsection furnace and boiler. Fig. 2 is a section at the line 2 2.0m Fig. 1. tail section at the line 3 3 on Fig. 2. Fig. 4. is a view similar to Fig. l, showing a modification. Fig. 5 is a section at the line' 5 5 on Fig. 4.

Myimproved furnace and boiler comprises the tubular boiler A, having underneath it, extending l[he entire length, the fire-box B, which, except as to the end openings F and F', one for fuel-,door and the other for smokeexit, is inclosed in a Water-jacket formed by the lower portion of the boiler, the waterspaces in such jacket being indicated at several points Where they appear in the figures bythe letter D. I provide smoke-boxes C C at both ends of the furnace, the chambers which constitute such passages being in the initial construction made to extend the Wholeheight of the furnace, but being stopped 0E, as hereinafter explained, at proper points to produce the circulation or course of the Fig. 3 is a desmoke-currents desired, as hereinafter explained. I provide independentpstacks E E, connected with the smoke-boxes Cand C', re-

zspectively.

.and occupied by the grate-bars G, and a bridge-Wall H is provided, adapted to be erect- .ed in the position of an omitted grate-bar at any point in the length of -the grate to stop off the excess of spacein the fire-box beyond vWhat is found necessary, the remainder of the space above the grate, from the opening h over the bridge-Wallto the smokeexit, be-

coming a part of the discharge-passage for the smloke from the re to the smoke box. The bridge-Wall H is held at the desired point in the length of Ythe grate for the purpose aforesaid by the telescoping rod h', which passes through and is adapted to be fastened in the sleeve H, the latter being attachedto the rebox by means of iianges H10. The grate-bars beyondthe bridge-Wall are substituted by plates G', closing off that portion of the grate area from the ash-pit and so preventing draft through that course into lthe smoke-box and discharge-pipes. In theoriginalconstruction of the Yparts thefurnace and boiler is precisely alike at both ends, and in erection or installationV it may be completed so as to be fed-from one end or the other, as found most convenient in each situation, and, as Will be seen from the further description, the construction in this respect may be reversed by slight changes or transposition of 'the parts, so as to change the end at which the fuel is supplied. VThe outer shell A of the boiler 'extends beyond the heads YA2 A? at bothends a distance corresponding to the desired Width of the smoke-boxes and is joined to the headplates K K at the opposite ends, such headplates extending the entire height of the furnace and boiler and having the doors hereinafter described for access to the various chambers and passages. Preferably the two headplates are precisely alike in construction and have their openings closed by doors L L", M M', and N N', the doors L L' being opposite the ends of the tubular portion of the boiler,

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so as to give access to the ends of the tubes, the doors M M' being at the opposite ends of the fire-box and the doors N N' being at the opposite ends of the ash-pit.

At whichever end is selected for the feeding end of the fire-box the fuel-throat O is interposed between the opening at that end of the fire-box and the opening in the headplate which is closed by the door M, and above the opening N into the ash-pit at the opposite end a cut-od plate N2 is secured. The doors N and N are provided with the usual draft openings and controlling dampers therein, the door N' thus serving as a checkdamper by affording direct draft to the chimney without passing through the fire. Between the smoke-boxes and their respective stacks are interposed dampers P P', and in the smoke-box C', at an intermediate point in the height of the portion of the boiler containing the horizontal plates, there is located a damper Q.

When the fire is being kindled in the furnace, the damper P will be closed and the dampers P and Q will be open, thus affording a direct draft from the fire-box to the stack E without causing the smoke-current to pass through any of the boiler-dues. When soft fuel, as wood or soft coal, is being burned in the furnace, requiring a relatively strong draft and large cross-section of passage-way to the stack, the damper P will be closed and the dampers P and Q will be open, thus causing the prod ucts of combustion to pass through the smoke-box C and thence out by the stack E. When hard coal or coke or any fuel not requiring so strong a draft nor so large a crosssection of passage through the fi ues is burned, the dampers P and Q will be closed and the damper P opened, thus compelling the products of combustion to pass from the smokebox C/ forward through the lower portion of the boiler flues, up through the forward smoke-box C, and then back through the upper portion of the smoke-box above the damper Q and out through the rear stack E.

When it is desired to clean the flues, all the draft-openings at the feeding end of the fire-box will be closed7 the damper P will be closed, and the dampers P and Q will be opened. The attendant may then open the door L, which will cause a strong draft to enter the forward end of the flues and find exit through the smoke-box C' and stack E', so that all dust and soot which may be cleared from the flues and from the forward smoke-box C will be carried away from the operator and out into the stack. Whenever it it is necessary to reach the rear end of the iiues for cleaning the same or the smoke-box at that end, the draft-openings of the fire-box being closed, the dampers P and Q being opened, and the damper P closed, the attendant may open the door L', which will cause a strong draft to pass in through the and out at the forward stack E.

Certain minor details of construction shown in the drawings may require mention. The end plates are secured to the boiler-shell by hook-bolts S S S, the said end plates having beads 7o, encompassing the ends of the boilershell and forming an angle in which packing to make the junction smoke-tight may be lodged when the hook-bolts are drawn up. The end plates, it will be noticed, extend Hangewise beyond the boiler-shell and have inturned beads 75 at the outer edge,l thus affording end guards for the insulating or heatretaining covering T, which may be applied outside the boiler-shell. At the top of the boiler I have shown a connection A3 for steamdome or steam-otake and at A4 A4 blow-off connections from the 'water-space.

f The smoke-box at the end selected for the forward or feeding end, it will be understood, is stopped off at a point above the fuelthroat and below or not above the level of the lowest boiler-flue, so as to prevent any interference with the draft from the lower end of that space. The plate V for stopping 0E this flue may be employed at will at either end,

proper ledges being formed on the boilerhead plates and on the end plates K K for supporting and retaining it.

The fuel-throat may be constructed so as to constitute this stop-off plate by merely extending its upper wall at the sides in lips or anges to the fuli width of the smoke-box. By constructing this fuel-throat with such flanges at both top and bottom and providing swing-doors in the upper sideboth ends of the furnace may be constructed precisely alike, each being provided with such a fuelthroat, and the furnace may then be adapted to be fed alternatively at either end by merely shifting the openings. Such construction I have shown-in Figs. 4 and 5, the form of fuelchute required being indicated by the letter W and having upper and lower flanges W W2, a trap-door W3 at the upper side adapted to be swung up from horizontal or closed position to a position against the vertical wall of the smoke-passage, so as to leave the throatway open. Whichever end is to be used as the feeding end,will have this trap-door W3 closed, the other end having it open. This modification requires, in order to carry out the plan of operation above described as to smoke circulation, that the damper Q should be duplicated in the forward smoke-box, and in the figure showing this modification a damper Q is provided in position in the forward box corresponding to that of the damper Q in the rear smoke-box. In this form I have shown the bridge-wall extending down below the ICO grate to cut o the portion of the ash-pit under the cut-oftl portion of the fire-box, thus dispensing with the plates Gr' on the grate-bars. This construction may also be used in the other form.

I claiml. A hot-water or steam heater comprising a horizontal tubular tine-boiler; a furnace extending underneath the boilerlongitudinally; smoke-boxes at both ends of the boiler; independent smoke-pipes receiving the discharge from the smoke-boxes respectively; independent dampers controlling 'exit from the smokeboxes through the smoke-pipes respectively, one of the smoke-boxes being in communication with the fire-box so as to receive the discharge therefrom, such communication being independent of both said dampers, whereby, said communication being unchanged, the products of combustion may be caused to pass out by either of the smoke-pipes at will, ac-

cording to the adjustment of the dampers.

2. A hot-water or steam heater, comprising a horizontal tubular due-boiler; a furnace extending underneath the boiler longitud inally; smoke-boxes at both ends of the boiler, communicating with both ends of the tubular iiues of the latter; independent smoke-pipes receiving the discharge from the smoke-boxes respectively, one of the smoke-boxes receiving the discharge from the re-box; dampers controlling exit through the smoke-pipes respectively; anda damper in the last-mentioned smoke-box located at an intermediate point in the height of the boiler.

3. A hot-Water or steam heater comprising a horizontal tubular line-boiler; a fire-box extending underneath the same; smoke-boxes at both ends of the boiler; independent smokepipes connected with the smoke-boxes respectively; valves or. dampers for controlling the course of the smoke from the smoke-boxes to cause it to pass out through one or the other of the smoke-,pipes at will, one of the smoke-boxes being in communication with the fire-box so as to receive the discharge therefrom, such communication being independent of both dampers, the heads or outer walls of the smoke-boxes having doors opposite the boiler ends for access thereto.

4. A hot-water or steam heater comprising a horizontal tubularboiler; a fire-box extending under substantially the whole length of the same, said fire-box having substantially similar openings at both ends; smoke-boxes at both ends ot' the boiler extending down past the ends of the fire-box; smoke-pipes receiving the discharge from the smoke-boxes respectively; independent dampers controlling exit from the smoke-boxes through the smoke-pipes respectively, one of the smokeboxes being stopped off above the level of the fire-box and the other being in communication with the fire-box so as to receive the discharge therefrom, such stoppage and communication beingindependent of both said dampers, whereby, said communication being unchanged, t-he products of combustion may be caused to pass out by either of the smokepipes at will, according to the adjustment of the dampers.

5. A steam and hot-Water heater, comprisinga horizontal tubular flue-boiler; a nre-box extending longitudinally substantially under the entire length of the boiler, and except as to fuel and smoke openings at the ends, inclosed by water-spaces of the boiler, the longitudinal shell of the boiler being extended at both ends beyond the boiler-head plates, and outer head-plates joined to said extended ends of the shell inclosing smoke-boxes at both ends of the boiler and fire-box, one of said smoke-boxes being stopped o above the level of the fire-box and below the tubular portion of the boiler, and having a fuel-throat extending through it into the fire-box; valves or dampers controlling exits through the smoke-pipes respectively, the outer headplates of the heater forming the outer Walls of the smoke-boxes, having doors affording access to the latter opposite the ends of the boiler-dues; and means for controlling draftentrance to the fire-box.

6. A steam or hot-water heater comprising a horizontal tubular fine-boiler; a fire-box jacketed by the water-spaces of the boiler and having its fuel-grate extending substantially under the entire length of the latter, the boiler-shell being extended at both ends beyond the boiler-head plates, and outer end plates for the heater joined to the extended ends of the boiler-shell, whereby there are formed between the boiler-head plates and said outer end plates, smoke-boxes, one at each end of the tubular portion of the boiler; a fuel-receiving throat leading across the smoke-box at one end into the fire-box; a smoke-discharge aperture from the tire-box leading across the water-jacket at the opposite end into the smoke-box at that end; and dampers controlling exit from the smokeboxes respectively.

7. A steam or hot-water heater, comprising a horizontal tubular boiler; a fire-box which extends substantially under the entire length of the tubular portion of the boiler; smokeboxes at both ends of the boiler and fire-box, and independent smoke-pipes leading from such smoke-boxes respectively; dampers controlling exit through the smoke-pipes respectively; and dampers in the smoke-boxes at intermediate points in the height of the tubular portion of the boiler; fuel throats or sleeves extending across the smoke-boxes into the opposite ends of the fire-box, and fueldoors closing the outer ends of such sleeves,

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said sleeves having each at the upper side a either end at Will, by closing the valve in the Chicago, Illinois, this 31st, day of July, A. D. fuel-throat at such end and opening the oor- 1902.

responding valve at the opposite end and suitably adjusting the remaining dempers to G' A' COPP 5 direct the smoke-.currents to either stack. In presence of- In testimony whereof I have hereunto set EDGAR L. CONANT,

my hand, in the presence of two Witnesses, ab JULIA S. ABBOTT. 

